/Engine/Plugins/2D/Paper2D/Source/Paper2D/Classes/PaperTileMapComponent.h
Makes the tile map asset pointed to by this component editable. Nothing happens if it was already instanced, but if the tile map is an asset reference, it is cloned to make a unique instance.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Sprite") void MakeTileMapEditable()